Concrete-block machine.



E. W. MYRIGK.

GONORETE BLDGK MACHINE. APPLIUATIUN FIiIED 002.16, 1909.

Patented Mar. 4, 1913 8 SHEETS-SHEET 1.

1,054,930. Patented Mar. 4, 1913..

8 BHEETSBHBET 2.

I mlnu'ilmmml F. W. MYRIGK.

CONCRETE BLOCK MACHINE.

APPLIOATION FILED OOT.16,1909.

Patented Mar. 4, 1913.

s SHEETSSIHEET 3.

F. W. -MYRIOK.

CONCRETE BLOCK MACHINE.

APPLICATION FILED OCT. 16, 1909.

Patentedv Mar. 4, 1913.

WWW

F. W. MYRIGK.

: CONCRETE BLOCK MACHINE. APPLICATION riLBD 001216, 1909.

Patented Mar. 4, 1913.

a sznnrs-snsm 5.

1- i Wide-5565 jze ezzrx WMM'Z/ F. W. MYRIGK.

CONCRETE BLOCK MACHINE.

APPLIGATION FILED 001'. 16, 1909.

Pate-ntd Mar. 4, 1913.

8 SHEETSSHEBT 6.

( 5 /3 I'M/z; /75

r. W. MYRIOK. CONCRETE BLOCK MACHINE. APPLIGATIONYTILED OCT. 16! 19 O9.

Patented Mar. 4, 1913.

s SHEETS-SHEET 7.

. Jar/( 227; z a4 F. W. MYRIGK.

CONCRETE BLOCK MACHINE.

APPLICATION FILED 0GT.16,1909.

1,054,930. Pafiqnted M21114, 1913.

8 SHEETS-SHEET 8.

- UNITED srams PATENT 'QFEICE.

FRANKLII; w. mYaIcx, or CHICAGO, ILLINOIS.

' 'JON'CRETE-BLOCK MACHINE.

To all whom may concern:

Be it known that I, FRANKLIN 'W. MYRIoK,

a citizen of the United States, residing at Chicago, in the county of Cook and State ryingmon the proper operation of the de-' vice for the succ'essfulmanufacture of the. concrete blocks, and one leading aim and purpose of my present invention is to render the machine entirely automatic, it being I merely. necessary for the operator tovinsert thepallet's from-time to time. e

gYa-rious features of novelty and improvement in the construction and operation of the various parts of the machine will be made apparent from a consideration of the following description of -a preferred embodimentof. the invention. In the accompanying drawings I have illustrated such embodiment, and in these drawings Figure l is a front elevation of such machine Wltll certain parts omittedfor the sake of clearness of illustration; Fig. 2 is a rear elevatioii of the machine; Fig. 3 is a longitudinal section adjacent to one of theside standards or supports; Fig. 4 is a horizontal section through the mold, illustrating the bin e-attachment between the ends and back of the mold; Fig. 5 is a fragmentary elevation of an end portion of-the core-g Fig.

6 is a substantially-central lo n itudinal ver- 45 tical sect-ion through the mac ine; Figs. 7

and .8 are detail views on arienlarged scale ofafragment of the means provided for conveying away the finished blocks, Fig. 9

is an elevation on an'enlarged scale of the moldand charging devices and their operat-' ing members; Fig. 10 is a plan view of the charger; Fig, 11 -is an endv-iew of the-conlitmoldifro'rit plate latch Operating mechanism Fi 13 ja srontelevation of the same Specification of Letters Patent.

l atented Mar. 4,1913.

Application filed October 16, mos. Serial No. 523,042.

Fig. 14. is a plan view of the valve'plate of" the charging device; Fig. 15 is a sectional view oftheoperatin ling the discharge 0 the plastic material from the charger; Fig. 16 is a transverse mechanism control-- vertical section through one ofthe finished concrete blocks; Fig. 17 is a longitudinal vertical section through the same; Fig; 18 is a plan view of a corner block; Fig.- 19 is a central longitudinal section of the pallet for supporting the block; Fig.- 20 is an end elevation of such pallet; and Fig. 21' is a fragmentary detail of a portion of the operating mechanism controlling the actuation of the core and the-front plate of the mold.

Referring to these drawings, it will be noticedthat the machine is provided with a base 25, upstanding from the opposite ends of which s a pair of vertical standards 26 and 27, each having on' itsinner face'an-upp erv-guiding rib 28 and a pair of similar lower guides 29, with the latter of .which cooperate thetwopairsof guiding shoes 30-seoured by means ofbolts 31 to the under surface of the end reciprocatorytable 32, the

of a verticallysliding. move mentsof whichon these guides are accom-' plished by means of a pair of cams 33 hearingagainst the under surface of the table and fixed to a;horizontal cam shaft 34 rotasupports or table in a pair of bearings 35, 35 in the standards or uprights 26 and 27. This cam I,

shaft is" rotated byomeans of a gear 36 fixed tov the end thereof protruding outside of thastimdard 26', which gear meshes wit-ha pinion 37 on a lower back sprocket shaft 38 rotatable in bearings 39 of the standards andequipped intermediate of said stands a'rds wlth a pair of sprocket wheels 40, the L object'and purpose o which is indicated hereinafter, the end or such shaft remote from the pinion '37 having fixed thereto a gear 41, theteet-h of which mesh with-those of a small pinion 42 on a front lower driv-' ing shaft 43 journaled; in the standards and equipped outside of the pinion 42 with a driving pulley 44.

On the reciprocatory table 32 on a pair of upright supports45, 45 (Fig.- 2), Imount vertically-the back plate 4,6of the mold, the

lower edge 47 of such mold' platetor wall structlon shown in Fig' 10;. vFig. 12 is a b horizontal seetional view of the core and cated. At its ends-thisback wall or plate 46" has hinged thereto at 8 inany approved;

manner the mold end lates or walls .49, which reach down to t e table top, as is shown in Fig. 1, and which have on their front edges the converging or inclined cam grooves 50.

The front plate 51 of the mold is longer than the rear plate 46 and is intended to slide vertically in the pair of guides 52, 52 (Fig. 1), the inner face of such plate having a pair of inwardly-extended ins 531taking in the grooves 50 of the mo (1 end plates, and ada ted by cooperation therewith to open an close said end plates byswinging the same slight] on their hinge connections with the mold ack plate 46. In order to sustain such front plate inproper operative 5 relation with the table top, the latter is provided with a pair of abutments 54 which" may be in the form of small angles to engage the outer face of the lower portion of themold front plate 51 and prevent its displacement during in of the'concrete. 7

Extended across theto of the machine and rotatable in a pair of e'arings 55 on the frame standards and also in a central bearing 56 depending from the top cross plate or me ber 57 connectingtogether the upper-ends of the standards 26 and 27, I

provide a crank shaft 58 having on its ro-.

,truding end a. drivin 'gear 59 driven rom the gear 36 mentioneg above through an intermediate gear 60. The pair of cranked portions 61, 61 of this shaft are operatively connected to a shaft 62 mounted in a pair of standards or uprights 63 one plunger air of pitmen or connecting rods 65, which, if desired, may'have a spring connection with the shaft 62, as is shown at 65. Obviously, this operating mechanism causes the vertical reciprocation of the plunger or compression frame 64, the latter being guided in its movements by a pair of shoes 66 co-actin viously mentions and-disposed on the inne'r faces of the standards 26 and 27. This lunger or compression frame, has depending therefrom a plurality of compression plungers or stampers 67 (provided with enlarged feet 68,-(Fig. 3) sposed .above the open top of the mold carried on the upper surface of the sliding table 32.

On its lower'surface and at one end the compression frame 64 carries apair of de- 55 pending bearings or brackets 69 (Figs. 12

and-'13) in which a rock shaft 70 is rota ,table, such shaft at its center having fixed thereto a core latch 71' spring-pulled toward f the standard 27 of the'machine frame by a front end carrles a mold front latelatch73,

coilcontractile spring 72. Shaft 70 at its the object and pur ose of whic will be presently set forth. it its other end the compression frame 64 issup lied with another latch shaft 74 rotatable m a pair of bearcompacting or compresswith the guides 28 pre-- ings 75 carried by the compression frame, such shaft having at its center a mold latch 76 constituting-a companion for the latch 71, these two. latches being connected together by a rod 77, the point of connection with the latch 76 being below the shaft 74, while the point of connection of the rod with the latch 71 is above its shaft 70, whereby when the shaft 74 is oscillated both latches will approach one another or recede from one another. At its front end shaft 74 has fixed thereto another hook or latch 78 forming a companion for the latch 73 and adapted to coiiperate with the front plate 51 of the mold, the top outstanding flange 79 of which is apertured at 80, 80 for the passage of such latches through the flange to engage with the under surface ofthe same. Also depending from the compression frame 64 is a block 81, to the lower end of which at 82 is fulcrumed a lever 83 connected to a short arm 84 on shaft 74 by a pair of parallel links 85. The other end of lever 83 carries a roller 86 coiiperating with an elongated corrugated cam 87 on an upright shaft 88 rotatable in a pair of brackets 89 and 90 secured to the upright standard 26, such cam having alternately disposed deep and shallow longitudinal parallel grooves into which the roller 86 is adapted to take, this roller being maintained in contact with the surface of the cam at all times by the action of spring 72. Atits bottom end (Figs. 1 and 21) shaft 88 carries a wheel 91 provided with, a plurality of outstanding radial pins The core referred to is characterized 94 and is indicated perhaps most clearly in Figs. 3, 6 and 9, such core being hollow and composed of two parts riveted together. This core, a fragment of which is shown in Fig. 5, has at its centerv a lower projection 95 to form an aperture 96 in the finished block 97 indicated in Figs. 16 and 17, the main body of the core forming the longitudinal recess 98 in the top of such block. At each end this core has pivoted thereto a link 99 to enablethe core hooks or latches above mentioned to secure engagement therewith, those portions of the core When the same is in the mold being accessible to the action of such'latches, owing to the fact at 100 to provide seats for the ends of the 'c'ore. A' horizontal plate 101 is mounted on the brackets or supports 45 and has boltedto its bottom surface at its opposite ends a v I 101 and acting as supports for an apertured' pair of bars 102 providing bearings for'a pluralityof anti-friction rollers 103 extendmg through slots or openings in the plate horizontal valve plate 104 supplied with an elongated opening 105,the edges ot such 'valve plate being guided and held down by guides 10.6 bolted on the top of the supporting plate 101. 'This valve plate 1s connected to the standards 45 by an expansion reco1l spring 107, the outer ends of which are joined to brackets or abutments 108 fastened to the edge of the plate, asshown for example in Figs. Qfand 14. iBoltedto the under surface of the supporting plate 101 are a pair of bars 109 supplied at their outer ends with screw-threaded adjustable stops or abutments 110, and adapted to limit 'the outward travel of the valve plate 104. Also bolted to plate 101 at each side of the machine is a supporting frame worklll carrying a number'of horizontal guiding rollers- 112 co-acting with the outstanding flanges 113 of T-shaped guide bars 114 bolted or otherwise secured to the ends of a hollow box or charger 115 resting upon the valve plate 104 and adapted to receive its charges of plastic material or concrete from a superposed telescoping supply or admission chute operating means.

116. As is indicated, the rear ends of these bars 114 are cross-connected by another bar 117 supportingan unapertured valve late 118 disposed on a level with the top 0 the charger box and fastened to the bar 117 in anyapproved manner as by a plurality of screws 119. It should also be noticed that the ends of the bar 117 are supplied with pintles or journals 120 for theattachment of Latches 121p1voted at 122 to a pair'of brackets 123 depending from the T-bars 114 are normally spring-pressed downwardly by the springs 124 and carry feet or projections 125 adapted to engage and'cooperate with the rear edges .of a pair of blocks 126 fastened to the top of valve plate 104. As is clearly indicated in 'Fig. 11, the forward ends of these'arms' 121 are curved or beveled at 127, such ends'being adapted to 00-3013 with a pair of beveled blocks 128 adjustably fastened to the stationary guides 106.

(The. hollow interior of th Qevharging box breadth as the mold and of onealf its depth, so as to have practically one-halfof .its capacity,- and extended across-the interior i 130 having projecting from its'opposite sides a'finumber of bent discharge arms 131. It

be apparent that. the division or per- 115 is of substantially thesaxhe len th and of such boxzis athick division or partition 129 above which is journaled a small shaft .tition 129 divides the charger into two parts or compartments 132 and 138, the two sets of discharge arms operating in these two parts of the box. On its protruding end shaft 130 is supplied with a short crank arm 134 (Fig. 10) connected to one of the bars 114 .by a coil contractile spring 135, which tends normally to rock the armsof shaft 130 into the dotted line position shown in' Fig.

-11. This crank arn'rhus pivoted thereto a rod 136 sliding in a bearing 137 mounted on a horizontal inwardly'extended portion 138 of the frame 111,'such rod carrying near its free end an adjustable stop collar 139 adapted to s\ving"shaft 130 and its arms 1'31 in one direction by engagement with the;

141 on 'a pair of bent arms 142 fulcrumed to thetop of the machine. frame at 143 ai1d connected together back of the feed chute The lower ends of these bars stantially-horizontal portions 145 each of .110 by a bent bar 144 constituting a con; w ncctlng yoke. 7 142 are bent forwardly to provide the subwhich carries at its end a pin or roller 146 adapted under certain conditions to enter the notch 147 in the lower edge of a cooperating connecting bar 148, two of which are used and arepivoted or hung'on the pins 120 of the framesecured to the charging box. As is shown in Fig. 3, the front ends of these bars 148 are turned outwardly to form fingers 140 with which coiiperate the pair of lifting bars 150 fastenedt-o the inner face of the front mold plate 51 outside of the mold ends by means of screws or bolts 151.

The cams l40'are'so proportioned that the portions 145 will move back far'enough for the-rollers 146 to be engaged by the notches 147 when the connecting bars 148 are lowered by the downward movement of the lifting bars 150. r

The mechanism for transporting away the finished compressed blocks ofconcrete' or other material consists of a leaf 152 hinged at 153 to the front edge of thetable32, the

free end of such leaf being pivotally sup,'

ported on a pair of post-sor standards 153 by-the pin and slot connection shown at 154, the heights of said posts being such that t-he'leaf inclines slightly downwardly from the main table-32,; At the, front end of suchleaf on a rotary shaft 155 I mount a passfa pair of sprocket chains'157, which also co-act with similar. 5 rocket'wheels 15 8 on .a shaft 159 atthe bee of and sup pair, of sprocket wheels 156, around which ported by the table These chains 157 are connected together at one point in any suitable manner by a. cross-bar 160 which is adapted to travel across the top of the table and remove the finished blocks of concrete on their pallets 164. These pallets, as shown in Figs. 19 and 20, on their under surfaces are cut away or recessed at 161 for the accommodation of this pair of sprocket chains, the cross-bar 160 being adapted to engage the part 162 of the pallet between the grooves and push the pallet and block across the table and down the leaf, the pallet being supported by these members, the sprocket chains merely acting as conveyers, and when the pallet and finished block. reach the lower end of the front table leaf they travel up the pair of slightly inclined supporting bars 163 which act to raise that portion 162 of the pallet with which the bar 160 cooperates above the path of travel of the latter, so that the pallet and its finished block are left resting on supports 163 ready for removal by the workmen. Shaft 159 and its conveyer sprocket wheels are rotated by means of a air of sprocket chains 165 passing arount a pair of other sprocket wheels 166 on shaft 159 and also around sprocket wheels 40 of shaft 38 mentioned above. In order to maintain these sprocket chains in their proper tight relation during all positions of the vertically-reciprocable table, I provide them with a pair of sprocket wheel idlers 167 mounted on a shaft 168 carried in aframe 169, fulcrumed or hinged to the base.

of the machine at 170, and provided at, its rear end with a weight 171, the function of which, as will be readily understood, is to apply the idlers with pressure to their corres ending sprocket chains.

11 Fig. 18 I have indicated another form of concrete block 172 which may be manufactured in a machine of this kind, this particular block being especially suitable for use in corner wall constructions. It is apparent that a modified style of core is necessary toproduce a block having the structural feati'n-es of that indicated, but I. have deemed it unnecessary to illustrate this part of the device in detail since the heart and essence of the invention are found in the machine already described.

The operation of this'device is substantially as follows: lhe table 32 and the compressor frame carrying the plungers 67 are.

. constantly reciprocatcd, the conveyer chains 157'also constantly traveling in a direction to remove the finished block and pallet, it being understood that the back wall or plate of the mold is positioned sufiicientl'y above the top of the table (Fig. 6) to permit the passage of these chains beneath the same. The projection 93 on gear. 36Ihaving operated on the pin wheel 91 so as to rotate the shaft 88 to bringoneof the deep grooves of the elongated cam 87 opposite the roller 86, it will be apparent that the lever 83 will have swung into such position as to bring the core latches 71 and 76 and the front wall mold latches 73 and 78 into such position that they secure operative engagement with the ends of the core and with the front plate 51 of the mold. Consequently, as the compression frame 64 r ses, due to the action of the crank shaft 58 and the connect-ions described, and the descent of the table 32, dueto the rotation of the pair of operating cams, the roller 86 will travel longitudinally in its 'deep groove of cam 87, maintainingthe latches in operative engagement with the core and front wall of the mold, lifting these two parts with the compression frame, and as the front wall of the mold ascends, because of the cam action. between the pins 53 and the inclined grooves 50 of the end walls of the mold, the latter are opened up slightly, permitting the operator to readily insert a pallet in the bottom of the mold over the pair of. chains 157. During this comparatively slight descent of the table 32 the feed chute 1-16 elongates because of its telescopic construction, and as the mold front plate 51 ascends itcarries its arms 150 upwardly into engagement with the ends 149 of the arms 148, raising the latter sufficiently so as to prevent operative engagement of the rollers or pins 146 of the constant-1y oscillating frame composed of the arms 142 and yoke 144 with the notches 147 consequently, during this insertion of the pallet into the mold there is no actuation or sliding of the charger box, and therefore there is no feeding of plastic material to the mold. Then the compression frame and its plungers and the core and front wall of the mold latched'thereto descend, the rollers 86 still traveling longitudinally, in the same groove of the cam 87, and the table 32rising somewhat due to the action of its operating cams 33. YVhen the front wall of the mold 51 rests upon the table32, that is, in such position that it closes the mold, it being understood that'during such descent i-t swings the end walls in slightly, the core at the same time rests in the seats 100 of the mold end walls, and simultaneously the projection 93 on gear 36 operates the corrugated cam 87 so as to shift lever 83 and separate the latches, which results in releasing the mold front wall and the core, leaving them in operative relation with the mold. It should also be understood that since the arms 150 are attached to and travel with the front wall 51. they remain in their lowermost position so'that as thecompression frame 64 ascends without the core and mold front wall,

the pins 146 of the connected levers 142 enas soon as, the compression plungers have been eleyated'sutiiciently, to slide forwardly tea e930 over the mold, the charger with its load previously received from the chute and the apertured valve plate 104:, The latter is operated by means of the fingers 125 on the arms 121 abutting against the blocks 126.

This valve plate, however, does not travel entirely over the mold but ceases its travel as soon as-the arms 121 are raised sufliciently to destroy the engagement between the parts 125 and 126 by means of the stationary wedges or cams 128. The valve plate does travel sufiiciently, however, to prevent the charge of concrete in the portion 133 of the charger from depositing in the portion of the mold back of the core.

Just as the charger with its load of concrete is brought into register with the top of the mold, the

collar 139 strikes the bearing 137, resulting in the turning of shaft 130 so as to swing the arms 131 downwardly in the portion 132 of the charger and upwardly in the part 133 which will act to facilitate the discharge of the concrete from. the charging box into the mold. Just as the charger starts to move back, the shaft 130 is turned, through the action of spring 135, in the opposite directicn, swingingthe arms-131 downwardly in the portion 133 of the chargingbox and upwardly in part 132. and acting to deliver or assist in the discharge of all the concrete;

During the-forward travel of this charger the plate 118=acts to close the lower end of the feed chute.116 so as to prevent the es-' cape of any of its contents until the charger has again assumed its rearmost position; As the charging boxslides back it picks up the valve plate lOetby engaging the blocks 126 so'thatthe valve plate travels along with the charger, the armsv 121 dropping down into operative position ,again as soon as they leave the cam blocks 128. As soon as the chargingbox is outof-the way the compression arm 6 1 and its stamping or pressure members 6'1 descend, the table and the mold at the same time ascending, due to the rotation of dams 33, so as to effect an eflicient compression or compacting of the. contents of the mold, which at this timeis about half filled. The compression frame and its plungers then rise, the table at the same time descending, the a charger moves forwardly delivering a second supply of material to the mold, the charger retreats, the

' compression members again descend, while the table rises only slightly, it being in a lower position this time than before to compensate for its having been half filled previously. After this compressing act, as the frame 64 rises it c ril'ies the core 94 and the mold front plate 1 with it, the latches hav-' ing been moved to operative position, owing to a-partia'lrotation of the elongated cor- 'rugated'cam SZ. Also the arms 150 move upwardlywith'themgld front plate 51, liftingjhc arms 48 sufiiciently so asto prevent an operative connection between the pins or rollers 146 and the notches 147. Consequently, there is no charging or forward movement of the charging box at this time. As the front plate of the mold goes up, due to the coiiperation of the pins 53 with the cam slots 50, the ends of the mold are swung outwardly slightly away from the'palle't and the formed block, and asthe front plate 50 reaches the uppermost limit of its travel the cross-bar 160 of the conveyenchains 157 passes beneath the back plate. of the mold, engages the portion 162 ofthe pallet, andcarries thelatter. with its formed concrete block down the leaf or shelf 152, the pallet riding on the latter and being conveyed merely by the chains and cross-bar. As the pallet and block continue their forward travel, they travel up the inclined tracks 163, where. their movement ceases owin tothe factflthat the pallet is raised by suc tracks above the path of travel of the cross-bar160 The compression frame 64, its plunger67,

the core and the front plate again descend,

- and again ascend without any chargingoccurring, the operator during this ascentof the-parts being enabled to insertthe new" pallet, after which the series of operations or steps described above are repeated. I It will, thereforqbe understood that thecompressi'on frame ascends twice in succession carrying with it the core and mold front plate, permitting during the first ascent the removal of the block and pallet, and during the second. ascent permitting insertion ofthe new pallet. The compression frame then ascends twice in succession without carryin with it the core and mold front plate, on

argings of the Whereas I have herein indicated one especial and particular embodiment of the invent'on, it is to be understood that the same is susceptible of a variety of embodiments, and that the structural features and characteristics of'many of the parts of the mechanism"herein set forth may be varied considerably without departure from the substanoe and essence-of the invention and without the sacrifice of any of its benefits and advantages.

I claim a 1. Inadevice of thecharacter described, the combination of a mold, a core and means automatically actuated by the device to remove the core from the mold to permit removal of the molded block and also to perby a part of the device to move the cam into and out of the path of the trip, substantially asdescribed.

2. In a device of the character described, the combination of a mold, a core, reciprocating means for compressing material in the mold, and means controlled by the compressing means to remove the core from the mold to permit removal of the molded block and to permit the core to remain in the mold during the charging. and compression thereof, substantially as described.

In a device of the character described, the combination of amold, means to charge said mold with matrial to be' compressed, reciprocatory compression means adapted to act on the material in the mold, a core, a

detachable connection between said core and compression means, and automatic means operating in proper timed relation to control the actuation of said detachable connection including a trip, a cam, and means ac-- tuated by a part of the device to move the cam into and out of the path of the trip whereby to permit the core to remain in the mold during the charging and compression and to remove the core to ermit removal of the finished moldedbloc substantially as described.

4. In a. device of the character described, the combination of a mold, means to charge said mold with material to be-compressed, reciprocatory compression means adapted to act on the material in the mold, a core, one or more latches adapted to detachably connect said core to said compression means, means to reciprocate said com ression means, a cam, means carried by t e compression means and cooperating with" the cam to controlthe actuation of said latch or latches whereby to permit the core to re-. main in the mold during the charging and compression and to remove the core to permit the removal of the finished molded block, and means for actuating said cam,

' substantially as described.

5. In a device of the character described, the combination of a mold, means to charge said mold with material to be compressed, rcciprocatory compression means adapted to act. on the material in the mold, a core, one or more latches adapted to dctachably connect said core to said compression means, means to reciprocate said compression means, a rotatable cam, means carried by the compression means and cooperating with the cam to control the actuation of said latch or latches whereby to permit the core to remain in the mold during the charging and compression and toremove the core to permit removal of the finished molded block, and means for intermittently actuating said cam, substantially as described.

6. In a device of the character' described,

the combination of a mold, means to charge 'trolling the actuation of said latches lncluding a trip, a cam, and means actuated by a part of the device to move the cam into and out of the path of the trip, whereby to permit the core to remain in the moldduring the charging and compression and to remove the core to permit. removal oftthe finished molded block, substantially as de scribed.

7. In a device of the character described, the combination of a mold, means to charge said mold with material to be compressed, reciprocatory compression means adapted to act. on the material "in the mold, a core, a pair of latches. connected together to approach one another simultaneously and to recede from one another simultaneously and adapted to form a detachableconnection between said core and compression means, meansv to reciprocate said compression means, and means to eontrol the actuation of said latches whereby to permit the core to remain in the mold during the charging and compression and to remove the core to permit the removal of the finished molded block, including an elongated longitudinally-grooved intermittently-actuated cam, substantially as described.

8. In a device of the character described, the combination of a mold, means to charge said mold with material to be compressed, reciprocatory compression meansadapted to act on the material the mold, means to tive position withrelation'to the other walls of the mold, substantially as described.

9. In a device of the character described -1 5 the combination of a mold, means to charge said mold with material to be compressed,

'reciprocatory compression means adapted to act onthe material in the mold, means to reciprocate said compression means, one wall of said mold being movable, one or more loo latghes detachably connecting said wall t sai compression means, and a cam to cont-rolt-he actuation of said latch or latches, whereby saidmoldwall may be moved with said compression means or may remain-in operative position with relation to the other walls of the mold, substantially as described.

;10. In a device of the character described, the combination of a mold, means to charge saidmold with material to be compressed,

reciprocatorycompression means adapted to act on the material in the mold, means to reciprocate said compression means. one wall FOf'SflJCl mold being movable, a detachable connection between said mold wall and compression means including a pair of latches connected together to approach one another simultaneously and to recede from one another simultaneously. and means to govern the operation of said latches, whereby said mold wall may be moved with said ,compression means or may remain in operative position with relation to the other walls of the mold, substantially as described.

11. In a device of the character described,

the combination of a mold, means tocharge.

saidmold with material to be'compressed.

'reciprocatorv compression means adapted to actonthe material in the mold, means to reciprocate said compression means, one wall of said mold being movable, a detachable connection between said compressing means and said mold wall including a pair of latches connected together to approach one another simultaneously and to recede from one another simultaneously, means to govern the operation of said detachable connection including an elongated longitudi-' nally-grooved intermittently-rotatable cam, and means to operate said cam. substantially ,as described.

12. In a device of thecharactcr described. the combination of a mold. means to charge said mold with material to be compressed. reciprocatorv compression means'adapted to act on the material in the mold. a core. a detachable connectionbetween said core and compression. means, means to reciprocate said compression means, one wall of said mold being 1novable,.a detachable connection between said compression means and moldwvalL, and means to (.cllilol the actuation of said detachable connection. whereby to permit the core to remain in the mold and the mold .wallto remain in operative relation to the other walls of the mold during the charging and.compression. and to remove the core and more said mold wall to permit removal of the finished molded block.

substantially as described.

13. In a device of the. character described, the combination of a mold having one wall thereof movable, means to charge said mold with material to be compressed, reciprocatory con'ipression means adapted to act on the material in the mold, means'to reciprocate said compression means, a core, a detachable connection between said compres sion means and core including a pair of latches connected together to'approa'ch oneanother-simultaneously and. to recede from one another simultaneously, a detachable connection-between said compression means and said movable mold wall. including "a pair of latches, movable with said core latches, and means tocontrol the actuation of said core and mold wall detachable connections whereby to permit the core to remain in the mold and the mold wall to remain in operative relation to the other walls of the mold during the charging and compression, and to remove the core and move said mold wall to permit removal of the finished molded block, substantially as described.

14. Ina device of the character described,

the combination of a mold, means to charge said mold with material to be compressed, reciprocatory compresslon means adapted to act on tlie'material in the mold, means to reciprocate said compression means, a core, 7

a detachable connection between said core "and compression means including a; pair .of

latches connected together to approach one another simultaneously and to recede from I one another simultaneously, one wall of said.

mold being movable. a detachable connection between said compression means and,

movable mold wall, including another pair of latches operatively connected to said core latches, means to govern th. actuation of said detachable connections including "an elongated longitudinallyrgrooved intermit-- tently-rotatable cam, and means 'to rotate said'cam intermittently, whereby to'permit the core to remain in the mold and the mold wall to remain, in operative relation to the the inner face of said frontplate and the adjacent edges of said end plates to swing the latter on their hinges during the sliding.

of said front plate, substantially as described.

16. In a device of the character described. the combination of a mold having a pair of hinged end plates and a sliding front plate, said end plates having cam grooves in their edges adjacent to said front plate, pins on said front plate cooperating with said cam grooves, and means to slide said front. plate whereby during its sliding movements said end plates are swung on their hinges, substantially as described.

17. In a device of the character described, the combination of a mold, a charger adapted to be moved over and away from said mold, operatin means for said charger having a detachable connection, and means actuated by a part of the device to automatically detach the parts of said operating mechanism to render said charger inoperative at intervals and to return said parts to their operative relation, substantially as described.

18. In a device of the character described, the combination of a mold, a sliding charger cooperating therewith, a cam, charger operating means between said cam and charger and operated by the former, said charger operating meanshaving a detachable connection, and means automatically operated by a part of the device to detachsaid connection at intervals to prevent movement of the charger and to return said connection to its operative relation, substantially as described.

19. In a device of the character described, the combination of a mold, a charger cooperating therewith, means to operate said charger detachably connectedthereto, compression means for the contents of said mold, means to actuate said compression 1neans,and means operated by said compression means and adapted when moved with said compression 1 means to detach the charger from its operating means, whereby to render the charger temporarily inoperative, substantially as described.

20. In a device of the character described, 'the combination of a mold having a movable wall, a charger coiiperating with said mold, operating means for said charger detachably connected thereto, means to move said mold wall, and means carried by said movable mold wall adapted to detach said charger from its operating means, whereby to render said charger temporarily inoperative, substantially as described.

541. In a device of the character described,

the combination of a mold having a sliding wall, a charger cooperating with said mold to feed thereto the material to be compressed, operating means for said charger detachably connected thereto, compression means adapted to act on the contents of the mold, means to actuate said compression means, a detachable connection between said compression means and sliding mold wall, means governing said latter detachable connection, and means actuated by said sliding whereby to render the charger temporarily inoperative, substantially as described.

22. In a device of the character described, the combination of a mold, a sliding charger adapted to feed material to said mold, means to slide said charger, a rock shaft in said charger, arms on said rock shaft adapted to assist in the delivery of the material to said mold, a crank on said rock shaft, a spring connected to said crank to rock said shaft in one direction, a stationary bearing, a rod sliding in said bearing and pivoted to said crank, and a collar on said rod adapted by engagement with said bearing to rock said shaft in the opposite direction in opposition to the action of said spring, substantially as described.

23. In a device of the character described, the combination of a vertically reciprocatory table, a mold on said table, 'a leaf hinged to said table, and unitary conveyer means passing over said table and leaf, and ada ted to remove the pallet and finished bloc: from the mold, substantially as described.

24. In a device of the character described, the combination of a vertically reciprocatory table, a mold on said table, an extension hinged to ,said table, sprockets on said table and extension, .--a pair of sprocket chains on said sprockets and passing over said table and extension and beneath the mold, and a cross-bar connecting said chains together, said cross-bar adapted to cooperate with the palleton' which the block is formed in the mold to remove said .pallet and finished block from said mold and carry the same along said table and leaf, substantially as described.

25. In a device of the character described,

the combination of a mold, a movablecharger adapted to feed material to said mold, means to move said charger, an apertured valve plate beneath said charger, a connection between said charger and valve plateitand means to break said connection duringfthe travel of the charger toward the mold, whereby to stop the travel of said valve plate before the charger comes into register with said mold, substantially as described.

FRANKLIN W. MYRICK.

Witnesses:

'WALTER M. FULLER,

M. A. Kinom. 

